Electric kettle



FIG. 1 is a perspective view of an electric kettle showing my new design;

FIG. 2 is a perspective view thereof from another angle;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines in the drawings depict portions of the electric kettle that form no part of the claimed design. 

CLAIM The ornamental design for an electric kettle, as shown and described. 